Hello, my Honeywell CM921 Thermostat does not display properly, I can hardly see anything on the LCD screen. Unit 16 High Carr Network Centre, Millennium Way, High Carr Business Park, Newcastle Under Lyme, Staffordshire, ST5 7XE

Pro Series Wireless Programmable Thermostat | CMS927

The window sensor, isn’t a window sensor as such it’s looking at temperatures changing rapidly due to drafts and the video says it’s hit and miss on open windows so probably wouldn’t use that feature as such. The CM921 thermostat is designed to provide automatic time and temperature control of heating or cooling systems. It can be used as part of a system in conjunction with combi boilers, oil-burners and gas fired boilers, circulation pumps, thermal actuators, zone values and electric heating systems Also this has gone on for months and months I have given up with my landlord and as I am buying the house anyway I 'd rather spare myself the hassle of speaking with him.Can I buy another same thermostat and bind it with my current receiver, or do I have to change both of them? If you take a good look at the Pro Series Wireless Programmable Thermostat, you will see it is nearly identical to Honeywell Home’s T3 Series Thermostat (the user display menu is identical). However, the big difference is that the Pro Series Wireless Programmable Thermostat will bind directly to any existing Honeywell Wireless Relay Boxes, where the T3 Series won’t, so you don’t have the hassle of having to get an installer out to fit this. CM921 can be installed without disrupting your room decor as no wiring connection is required between the room unit and the boiler The Honeywell CM921 Wireless 24Hr Programmable Room Thermostat series of Wireless Programmable Thermostats is designed to provide wireless time and temperature control to heating or cooling systems in domestic and light commercial buildings. The slim, ultra modern design complements the large LCD screen with the Line of Text (LoT) display and one function button to ensure simplified programming and operation for all users.

CM921 - User Guide - Sparesbase CM921 - User Guide - Sparesbase

Pro Series Wireless Programmable Thermostat | Direct Replacement for Honeywell CM927/CMS927/CMS927B1049 Wireless Programmable Room Thermostat OFF mode has an integral frost protection setting at minimum 5°C (installer adjustable) so that pipes in the house will never freeze in winter

The Pro Series Wireless Programmable Thermostat works with the following Honeywell Wireless Relay Boxes: The boiler has a mind of its own and the heating decides to come on and off when it feels like it especially at 2 - 3 am in the morning! Optimum Start & Stop saves energy and money by getting to the correct temperature at the correct time and turning off the heating early if the room temperature is correct.